Quantum correlations in two coupled superconducting charge qubits

被引:5
作者
Batle, J. [1 ]
Bagdasaryan, Armen [2 ,3 ]
Farouk, Ahmed [4 ]
Abutalib, M. [5 ]
Abdalla, S. [6 ]
机构
[1] Univ Illes Balears, Dept Fis, Palma De Mallorca 07122, Balearic Island, Spain
[2] Amer Univ Middle East, Dept Math, Kuwait 15453, Egaila, Kuwait
[3] Russian Acad Sci, Inst Control Sci, 65 Profsoyuznaya, Moscow 117997, Russia
[4] Al Zahra Coll Women, Dept Informat Technol, POB 3365, Muscat, Oman
[5] King Abdulaziz Univ, Dept Phys, Fac Sci, Al Faisaliah Campus, Jeddah, Saudi Arabia
[6] King Abdulaziz Univ, Fac Sci, Dept Phys, POB 80203, Jeddah 21589, Saudi Arabia
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2016年 / 30卷 / 19期
关键词
Quantum correlation; nonlocality measure; quantum evolution; NONLOCAL CHARACTER; BELL INEQUALITY; STATES; INFORMATION; MECHANICS; THEOREM;
D O I
10.1142/S021797921650123X
中图分类号
O59 [应用物理学];
学科分类号
摘要
Quantum correlations are considered analytically in a model that contains two coupled superconducting charge qubits sharing a large Josephson junction. Dynamical properties for the reduced two-qubit state are addressed in the quantum evolution when the coupling between the field and the qubits is either constant or time-dependent. In the latter case, adiabatic and nonergodic features are present for extremely low and fast evolutions, respectively. Finally, the case where the coupling drops to zero is also considered.
引用
收藏
页数:12
相关论文
共 37 条
[1]   Device-independent security of quantum cryptography against collective attacks [J].
Acin, Antonio ;
Brunner, Nicolas ;
Gisin, Nicolas ;
Massar, Serge ;
Pironio, Stefano ;
Scarani, Valerio .
PHYSICAL REVIEW LETTERS, 2007, 98 (23)
[2]   From Bell's theorem to secure quantum key distribution [J].
Acin, Antonio ;
Gisin, Nicolas ;
Masanes, Lluis .
PHYSICAL REVIEW LETTERS, 2006, 97 (12)
[3]   Entanglement in many-body systems [J].
Amico, Luigi ;
Fazio, Rosario ;
Osterloh, Andreas ;
Vedral, Vlatko .
REVIEWS OF MODERN PHYSICS, 2008, 80 (02) :517-576
[4]   No signaling and quantum key distribution [J].
Barrett, J ;
Hardy, L ;
Kent, A .
PHYSICAL REVIEW LETTERS, 2005, 95 (01)
[5]   Nonlocality and entanglement in qubit systems [J].
Batle, J. ;
Casas, M. .
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2011, 44 (44)
[6]   COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].
BENNETT, CH ;
WIESNER, SJ .
PHYSICAL REVIEW LETTERS, 1992, 69 (20) :2881-2884
[7]   TELEPORTING AN UNKNOWN QUANTUM STATE VIA DUAL CLASSICAL AND EINSTEIN-PODOLSKY-ROSEN CHANNELS [J].
BENNETT, CH ;
BRASSARD, G ;
CREPEAU, C ;
JOZSA, R ;
PERES, A ;
WOOTTERS, WK .
PHYSICAL REVIEW LETTERS, 1993, 70 (13) :1895-1899
[8]  
Berman G P., 1998, Introduction to Quantum Computers
[9]   Quantum communication complexity protocol with two entangled qutrits [J].
Brukner, C ;
Zukowski, M ;
Zeilinger, A .
PHYSICAL REVIEW LETTERS, 2002, 89 (19)
[10]   Multipartite nonlocality in a thermalized Ising spin chain [J].
Campbell, Steve ;
Paternostro, Mauro .
PHYSICAL REVIEW A, 2010, 82 (04)